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diff --git a/UnixPkg/Library/UnixBaseLib/DivS64x64Remainder.c b/UnixPkg/Library/UnixBaseLib/DivS64x64Remainder.c
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index 0000000000..bb2fddcff8
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+++ b/UnixPkg/Library/UnixBaseLib/DivS64x64Remainder.c
@@ -0,0 +1,53 @@
+/** @file
+  Math worker functions.
+
+  Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
+  This program and the accompanying materials
+  are licensed and made available under the terms and conditions of the BSD License
+  which accompanies this distribution.  The full text of the license may be found at
+  http://opensource.org/licenses/bsd-license.php.
+
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+
+
+
+#include "BaseLibInternals.h"
+
+/**
+  Divides a 64-bit signed integer by a 64-bit signed integer and generates a
+  64-bit signed result and a optional 64-bit signed remainder.
+
+  This function divides the 64-bit signed value Dividend by the 64-bit signed
+  value Divisor and generates a 64-bit signed quotient. If Remainder is not
+  NULL, then the 64-bit signed remainder is returned in Remainder. This
+  function returns the 64-bit signed quotient.
+
+  It is the caller's responsibility to not call this function with a Divisor of 0.
+  If Divisor is 0, then the quotient and remainder should be assumed to be 
+  the largest negative integer.
+
+  If Divisor is 0, then ASSERT().
+
+  @param  Dividend  A 64-bit signed value.
+  @param  Divisor   A 64-bit signed value.
+  @param  Remainder A pointer to a 64-bit signed value. This parameter is
+                    optional and may be NULL.
+
+  @return Dividend / Divisor
+
+**/
+INT64
+EFIAPI
+DivS64x64Remainder (
+  IN      INT64                     Dividend,
+  IN      INT64                     Divisor,
+  OUT     INT64                     *Remainder  OPTIONAL
+  )
+{
+  ASSERT (Divisor != 0);
+  return InternalMathDivRemS64x64 (Dividend, Divisor, Remainder);
+}